diff --git a/lib/require-analyzer.js b/lib/require-analyzer.js
index 4463ef8..a615935 100755
--- a/lib/require-analyzer.js
+++ b/lib/require-analyzer.js
@@ -13,6 +13,7 @@ var util = require('util'),
     spawn = require('child_process').spawn,
     npm = require('npm'),
     npmout = require('npm/lib/utils/output'),
+    npmls = require('npm/lib/utils/read-installed'),
     semver = require('semver'),
     findit = require('findit');
 
@@ -154,30 +155,29 @@ analyzer.npmAnalyze = function (deps, options, callback) {
     // Then see if it depends on any other dependencies that are in the
     // list so those dependencies may be removed (only if `options.reduce` is set).
     //
-    npm.commands.ls([], function (err, results) {
+    npmls(options.root, function (err, result) {
       if (err) {
         return callback(err);
       }
+      else if (!result || !result.dependencies) {
+        return callback(null);
+      }
       
-      Object.keys(results).forEach(function (result) {
-        var parts = result.split('@'),
-            pkg = parts[0],
-            version = parts[1];
-            
+      Object.keys(result.dependencies).forEach(function (pkg) {
         if (deps.indexOf(pkg) !== -1) {
-          pkgs[pkg] = results[result].data.versions[version];
+          pkgs[pkg] = result.dependencies[pkg];
         }
       });
-      
+
       emitter.emit('search', pkgs);
       if (!options.reduce) {
         npmout.write = _write;
         return callback(null, pkgs);
       }
-      
+
       var reduced = analyzer.merge({}, pkgs),
           suspect = {};
-          
+
       deps.forEach(function (dep) {
         if (pkgs[dep] && pkgs[dep].dependencies) {
           Object.keys(pkgs[dep].dependencies).forEach(function (cdep) {
@@ -188,10 +188,10 @@ analyzer.npmAnalyze = function (deps, options, callback) {
           });
         }
       });
-      
+
       emitter.emit('reduce', reduced, suspect);
       npmout.write = _write;
-      callback(null, reduced, suspect);
+      callback(null, reduced, suspect);   
     });
   });
   
@@ -361,11 +361,16 @@ analyzer.file = function (options, callback) {
   // If a timeout has been set then exit the 
   // process after the specified timespan
   //
-  setTimeout(function () {
+  var timeoutId = setTimeout(function () {
     deps.kill();
   }, options.timeout);
   
   deps.on('exit', function () {
+    //
+    // Remove the timeout now that we have exited.
+    //
+    clearTimeout(timeoutId);
+    
     //
     // When the process is complete remove any `core` node.js packages
     // (i.e. packages in `process.bindings('natives')`) and any packages